US6088998A - High compression transverse zipper system - Google Patents

High compression transverse zipper system Download PDF

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Publication number
US6088998A
US6088998A US09/114,618 US11461898A US6088998A US 6088998 A US6088998 A US 6088998A US 11461898 A US11461898 A US 11461898A US 6088998 A US6088998 A US 6088998A
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US
United States
Prior art keywords
male
thermoplastic film
female
profiles
interlocking
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/114,618
Other languages
English (en)
Inventor
Art Malin
Ronald L. Ramsey
Lawrence Share
Richmond M. Scott
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Assigned to ILLINOIS TOOL WORKS INC. reassignment ILLINOIS TOOL WORKS INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SHARE, LAWRENCE, SCOTT, RICHMOND M., RAMSEY, RONALD L., MALIN, ART
Priority to US09/114,618 priority Critical patent/US6088998A/en
Priority to US09/261,852 priority patent/US6167597B1/en
Priority to NZ336156A priority patent/NZ336156A/xx
Priority to CA002275075A priority patent/CA2275075A1/fr
Priority to ES99305364T priority patent/ES2276507T3/es
Priority to DE69933826T priority patent/DE69933826T2/de
Priority to EP99305364A priority patent/EP0985605B1/fr
Priority to AT99305364T priority patent/ATE344192T1/de
Priority to AU39140/99A priority patent/AU717915B2/en
Priority to BR9903315-1A priority patent/BR9903315A/pt
Priority to AU20618/00A priority patent/AU727033B2/en
Publication of US6088998A publication Critical patent/US6088998A/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2541—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor characterised by the slide fastener, e.g. adapted to interlock with a sheet between the interlocking members having sections of particular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B61/00—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages
    • B65B61/18—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements
    • B65B61/188—Auxiliary devices, not otherwise provided for, for operating on sheets, blanks, webs, binding material, containers or packages for making package-opening or unpacking elements by applying or incorporating profile-strips, e.g. for reclosable bags
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D33/00—Details of, or accessories for, sacks or bags
    • B65D33/16—End- or aperture-closing arrangements or devices
    • B65D33/25—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners
    • B65D33/2508—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor
    • B65D33/2516—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener
    • B65D33/2533—Riveting; Dovetailing; Screwing; using press buttons or slide fasteners using slide fasteners with interlocking members having a substantially uniform section throughout the length of the fastener; Sliders therefor comprising tamper-indicating means, e.g. located within the fastener the slide fastener being located between the product compartment and the tamper indicating means
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44B—BUTTONS, PINS, BUCKLES, SLIDE FASTENERS, OR THE LIKE
    • A44B19/00—Slide fasteners
    • A44B19/10—Slide fasteners with a one-piece interlocking member on each stringer tape
    • A44B19/16—Interlocking member having uniform section throughout the length of the stringer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B70/00—Making flexible containers, e.g. envelopes or bags
    • B31B70/74—Auxiliary operations
    • B31B70/81—Forming or attaching accessories, e.g. opening devices, closures or tear strings
    • B31B70/813—Applying closures
    • B31B70/8131—Making bags having interengaging closure elements
    • B31B70/8133—Applying the closure elements in the cross direction
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S24/00—Buckles, buttons, clasps
    • Y10S24/30—Separable-fastener or required component thereof
    • Y10S24/50—Separable-fastener or required component thereof including member having elongated, resilient, interlocking face with identical, parallel cross-sections throughout its length
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S493/00—Manufacturing container or tube from paper; or other manufacturing from a sheet or web
    • Y10S493/916—Pliable container
    • Y10S493/927—Reclosable
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2532—Zipper or required component thereof having interlocking surface with continuous cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/25—Zipper or required component thereof
    • Y10T24/2532—Zipper or required component thereof having interlocking surface with continuous cross section
    • Y10T24/2534—Opposed interlocking surface having dissimilar cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45152—Each mating member having similarly shaped, sized, and operated interlocking or intermeshable face
    • Y10T24/45157—Zipper-type [e.g., slider]

Definitions

  • the present invention relates to reclosable plastic bags and packages of the type in which food products, such as chips and cereal, and other goods are packaged for sale to consumers. More particularly, the present invention relates to a reclosable zipper strip for use in transverse-zippered reclosable plastic bags made on form-fill-seal (FFS) machines.
  • FFS form-fill-seal
  • the present invention relates to improvements in the package-making art and may be practiced in the manufacture of thermoplastic bags and packages of the kind that may be used for various consumer products, but which are particularly useful for food products which must be kept in moisture and air-tight packages, free from leakage until initially opened for access to the product contents, which packages are then reclosable by zipper means to protect any remainder of the product therein.
  • the present invention relates to the area of reclosable packaging known as the transverse zipper.
  • the zipper is attached transverse to the longitudinal axis of the material used to make the bag, as opposed to being attached to the material parallel to the longitudinal axis.
  • a method and apparatus for making reclosable plastic bags with a transverse zipper on a FFS machine is disclosed in U.S. Pat. No. 4,909,017.
  • the length of reclosable bags made on FFS machines when the zipper is attached parallel to the longitudinal axis of the thermoplastic film is limited to the diameter of the filling tube of the FFS machine.
  • bags of this type are wider than they are long. While such bags are suitable for certain products where shorter bags are desirable, such as cheese and chicken parts, these bags are not suitable for applications in which longer bags are desirable, for example chips and other snack foods.
  • transverse zipper for the longitudinal zipper.
  • the transverse sealing bars associated with the FFS machine do not flatten the zipper during formation of the top and bottom seals of the package since the transverse sealing bars may seal the zipper to the thermoplastic film transversely thereacross without having to flatten the zipper ends.
  • the length of the packages made on the FFS machine can be varied while the width of the zipper remains the same.
  • the present invention relates to a particular type of zipper strip which may be used in transverse zipper applications, a method for attaching the zipper strip to thermoplastic film, a method for making reclosable packages on an FFS machine using the zipper strip-equipped thermoplastic film, and a reclosable package utilizing the zipper strip.
  • FIG. 1 depicts a cross section of a prior art reclosable plastic bag 10 made on an FFS machine having a transverse zipper strip 12 disposed at the top of the bag.
  • the zipper strip 12 has a male profile 14 interlocked with a female profile 16.
  • the male profile 14 has a male interlocking member 18 and a web 20 defining a trailing flange 22.
  • the female profile 16 has a female interlocking member 24 and a web 26 defining an extended leading flange 28 and a trailing flange 30 on either side of the interlocking member.
  • the zipper strip 10 is initially secured to the thermoplastic film used to make the bag by sealing the extended leading flange 28 thereto.
  • the thermoplastic film with the zipper strip thus initially sealed thereto is fed into an FFS machine where the bag is formed and the final zipper seals made by sealing the trailing flanges 22, 30 to the opposing bag walls 32, 34.
  • the zipper strip is thus secured to the bag at three locations, denoted in FIG. 1 as seals A, B and C.
  • the present invention is, in four aspects, a zipper strip for use with transverse zippered bags, a method for attaching the zipper strip to a continuous supply of thermoplastic film, a method for making reclosable bags on an FFS machine using the zipper strip-equipped thermoplastic film, and a reclosable bag utilizing the zipper strip.
  • the zipper strip comprises a male profile and a female profile for mating with the male profile.
  • the male profile includes a male interlocking member and a web defining a trailing flange.
  • the female profile includes a female interlocking member and a web defining a trailing flange.
  • the male interlocking member is engageable within the female interlocking member to join the male and female interlocking profiles together.
  • One or both of the interlocking members is provided with high compression members which allows at least one of the interlocking members to be sealed to the bag without being crushed or distorted due to the application of heat and pressure directly behind or closely adjacent to the interlocking members by the FFS machine sealing bars, thereby eliminating the peel problem associated with the three point seal technique discussed above.
  • thermoplastic film is intermittently paid off a continuous supply of the same and fed into an FFS machine.
  • a length of the interlocked zipper strip is attached to the flat film transverse to its longitudinal axis each time it is brought to rest as it advances in bag-length increments.
  • the zipper-equipped film may be rolled up and used on an FFS machine at a later time, or may be fed directly into an FFS machine to make reclosable bags.
  • thermoplastic film with the transverse zipper strips attached at bag length intervals is fed into the FFS machine where it is formed into a bag, filled, and sealed.
  • the transverse zipper-equipped thermoplastic film is folded over the collar of the FFS machine and wrapped around the filling tube to form a tube.
  • the longitudinal edges of the film are then sealed to form a back seam.
  • the transverse sealing jaws then seal the bottom of the tube to form an open bag.
  • the bag is then filled, if desired.
  • transverse sealing jaws seal the trailing flanges of the zipper strip to adjacent bag walls without sealing them to each other, seal at least one of the interlocking members to one of the bag walls without crushing or distorting the interlocking members, and seal the top of the bag so as to make a completed bag.
  • the finished bag may be opened by pulling outwardly on the bag walls.
  • FIG. 1 is a cross-sectional view of a reclosable bag having a prior art zipper strip
  • FIG. 2 is a cross-sectional view of a reclosable bag having a prior art zipper strip being opened;
  • FIG. 3 is a cross-sectional view of a zipper strip in accordance with a first embodiment of the present invention
  • FIG. 4 is a cross-sectional view of a zipper strip in accordance with a second embodiment of the present invention.
  • FIG. 5 is a cross-sectional view of a zipper strip in accordance with a third embodiment of the present invention.
  • FIG. 6 is a perspective view of a zipper strip in accordance with the first embodiment of the present invention being attached to thermoplastic film;
  • FIG. 7 is a perspective view of an FFS machine making reclosable bags from thermoplastic film
  • FIG. 8 is a cross-sectional view of a completed bag having a zipper strip in accordance with the first embodiment of the present invention.
  • FIG. 9 is a cross-sectional view of a completed bag having a zipper strip in accordance with the first embodiment of the present invention being opened;
  • FIG. 3 is a cross-sectional view of a zipper strip 40 in accordance with the first aspect of the present invention.
  • the zipper strip 40 comprises a male profile 42 and a female profile 44.
  • the male profile 42 includes a male interlocking member 46 having a base 43 and a male portion 45 integral with the base 43.
  • the male portion 45 may have an arrow-shaped cross-section, or as shown in FIG. 3, an asymmetrical arrow-shaped cross section designed to make the zipper strip 40 easier to open from one side or the other.
  • the female profile 44 includes a female interlocking member 48 having a base 47 and a female portion 49 integral with the base 47.
  • the female portion 49 is comprised of two inwardly curving members forming a receptacle or channel into which the male portion 45 may be engaged. It should be noted that while these configurations for male and female portions 45, 49 are preferred, any configuration which provides for interlocking may be used.
  • the male profile 42 includes a web 50 which extends laterally from one side of the male interlocking member 46 defining a trailing flange 52.
  • the female profile 44 similarly includes web 54 which defines a trailing flange 56, as well as an extended leading flange 58.
  • the extended leading flange 58 is so-called because it extends beyond the opposing male profile 42 and because it is the flange that first enters the FFS machine as the zipper strip 40 is attached to the thermoplastic film, as discussed more fully below.
  • the extended leading flange may alternatively be provided on the male profile 42 if desired, or neither profile may have a leading flange.
  • the webs 50, 54 are integral with the interlocking members 46, 48 and are generally coextruded therewith, although they may be extruded separately and attached at a later time.
  • the profiles are extruded from a plastic material commonly used in the packaging industry, such as polyethylene.
  • the profiles may contain a heat activated adhesive 62 which helps in the sealing of the profiles to the thermoplastic material which is used to make the packages.
  • the male interlocking member 46 further includes high compression members 64 on either side of the male portion 45 extending from the base 43.
  • the high compression members 64 are longer than the male portion 45 so that while the male interlocking member 46 is being sealed to the thermoplastic film, the high compression members 64 engage the base 47 of the female interlocking member 48 and thereby prevent the male and female portions 45, 49 from being distorted or crushed by the heat and pressure applied by the FFS machine sealing bars.
  • the length of the high compression members 64 is such that the high compression members 64 engage the female base 47 before the apex 66 of the male portion 45 engages the nadir 68 of the female portion 49, thus preventing the compression and ultimate crushing and distortion of the male and female portions. It should be noted that the same result can be achieved by placing the high compression members 64 on the female interlocking member 48, or on both the male interlocking member 46 and the female interlocking member 48.
  • the profiles may also included ridges 70 aligned with the high compression members 64 which form indentations 72 on both profiles, which indentations enable the user to better manipulate the zipper during closing.
  • the ridges 70 also provide an added function in that the sealing bars which will seal the interlocking member or members to thermoplastic film will directly contact the ridges 70 only, and not the portion of the base directly behind the male or female portion, ensuring that the heat and pressure are transmitted to the high compression members 64 and not the male and female portions 45, 49, which transmission could cause irreparable distortion of the interlocking members.
  • Gripping members 60 can also be provided which will facilitate the opening of a package incorporating the zipper strip 40.
  • a heat activated adhesive 62 is used to aid in the sealing of the zipper strip 40 to the thermoplastic film. As shown in FIG. 3, the heat activated adhesive 62 is placed on the trailing flanges 52, 56, on the extended leading flange 58, behind the male portion 45, and behind the ridges 62 on the male interlocking member 46. Heat activated adhesives are commercially available and are well known in the reclosable packaging art. By placing the adhesive adjacent the ridges but inside such ridges the sealing can be controlled and the sealant cannot move outwardly of the ridges.
  • FIG. 4 depicts a zipper strip 74 in accordance with a second embodiment of the present invention.
  • the zipper strip 74 is identical to the zipper strip 40 of FIG. 3 except that the male interlocking member 46 does not have ridges 70. Instead, there are three spaced strips 76 of heat activated adhesive behind the male interlocking member.
  • FIG. 5 depicts a zipper strip 80 in accordance with a third embodiment of the present invention.
  • the zipper strip 80 has a female profile 82 and a male profile 84.
  • the female profile 82 includes a female interlocking member 86 having a base 87 and a female portion 88 comprised of two projections having generally rounded cross-sections extending therefrom to form a channel, and a web 90 which defines a trailing flange 92.
  • the male profile 84 includes a male interlocking member 94 having a base 95 and a rounded projecting member defining a male portion 96 extending therefrom which is engageable within the channel of the female profile 82 and a web 98 which defines an extended leading flange 100 and a trailing flange 102.
  • Both profiles are provided with a heat activated adhesive 104 along their lengths to facilitate sealing as well as gripping members 103 which facilitate the opening of a package incorporating the zipper strip 80 by the consumer.
  • a pair of high compression members 105 in the form of rounded members extend from the base 95 of the male interlocking member 94 towards the female interlocking member 86. As one or both of the interlocking members are sealed to thermoplastic film, the high compression members contact the base 87 of the female interlocking member 86. Because of their rounded shape and relatively thick cross sections, the high compression members 105 can withstand substantial heat and pressure and thereby ensure that the male and female portions will not be crushed or distorted. In addition, the male and female portions 88, 96 are provided with shapes similar to the high compression members to further protect them from damage. The first and second webs 90, 98 may thus be sealed across their width to thermoplastic film without risk of damaging the male and female portions.
  • FIG. 6 depicts how the zipper strip 40 of FIG. 3 is attached to thermoplastic film 106 in accordance with the second aspect of the present invention.
  • the zipper strip is supplied from a continuous roll 108 and is pulled across the film 106 and disposed thereon by a positioning device 125 (not shown in FIG. 6 for clarity).
  • the positioning device 125 can take any of a variety of forms well known to those skilled in the reclosable packaging art, such as a vacuum conveyor for pulling the zipper strip 40 across the film 106 and a knife for cutting the zipper strip 40 from the continuous roll thereof 108.
  • the thermoplastic film 106 is paid off from a continuous roll 110, as shown in FIG. 6, in increments equal to the length of the bags which will ultimately be formed from the film 106 on an FFS machine.
  • the film 106 has a longitudinal axis X which is parallel to the direction of travel of the film 106.
  • the zipper strip 40 is disposed on the film 106 transverse to the longitudinal axis X with the male profile 42 on top of the female profile 44 and the extended leading flange 58 projecting in the direction of motion of the film 106.
  • the zipper strip 40 has a length approximately equal to half the width of the film 106 and is disposed centrally thereon.
  • Heater seal bars 112 are positioned to seal the extended leading flange 58 to the film 106. When no extended leading flange is used, the high compression members 64 make it possible to seal the female interlocking member to the thermoplastic film 106.
  • the transverse zipper-equipped film is fed into a FFS machine, as shown in FIG. 7.
  • the thermoplastic film 106 is fed downwardly over collar 114 and folded around filling tube 116.
  • the edges of the film are brought together and could be pressed together by a pair of rollers 118.
  • the edges are then welded together by heater bars 120 to form a longitudinal back seam 122.
  • Contents may then be dropped through the tube 116 into the bag 124 which has a lower seam 126. As discussed below, the lower seam 126 was made when the preceding bag was completed.
  • cross seal jaws 128, which perform four simultaneous functions.
  • the cross seal jaws 128 seal the female trailing flange 56 to one of the bag walls and seal the male trailing flange 52 and the male interlocking member 46 to the opposing bag wall.
  • the heat activated adhesive 62 makes it possible to complete these seals without sealing the profiles 42, 44 to each other and the high compression members 64 prevent the interlocking members 46, 48 from being crushed and distorted during sealing. While only the male interlocking member 46 is sealed to the bag, it should be noted that both interlocking members may be sealed if so desired, as in the case of the zipper strip 80 of FIG. 5.
  • the cross seal jaws 128 seal the top of the bag to form a pilfer evident seal 130.
  • the cross seal 128 jaws make the lower seam 126 for the next succeeding bag.
  • the cross seal jaws 128 cut the completed bag 124 from the film 106.
  • the completed bag 124 has a pilfer evident seal 130, a transverse zipper 40, a lower seam 126 and a back seam 122.
  • FIG. 8 a cross section of the completed bag 124 is shown in FIG. 8.
  • the zipper strip 40 is sealed to the bag at A, B and C.
  • seal C extends behind the male interlocking member 46. The result is that when the bag is opened by the consumer there is no rotation of the male interlocking member, as shown in FIG. 9 and as compared to FIG. 2, and thus the peel force on seal C is greatly reduced and there is no danger of peeling of the male profile from the bag.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bag Frames (AREA)
  • Making Paper Articles (AREA)
  • Preparation Of Compounds By Using Micro-Organisms (AREA)
  • Seal Device For Vehicle (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Slide Fasteners (AREA)
  • Laminated Bodies (AREA)
US09/114,618 1998-07-13 1998-07-13 High compression transverse zipper system Expired - Fee Related US6088998A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US09/114,618 US6088998A (en) 1998-07-13 1998-07-13 High compression transverse zipper system
US09/261,852 US6167597B1 (en) 1998-07-13 1999-03-03 High compression zipper
NZ336156A NZ336156A (en) 1998-07-13 1999-06-08 Zipper strip for reclosable package, one strip has compression members to prevent crushing in FFS machine
CA002275075A CA2275075A1 (fr) 1998-07-13 1999-06-17 Systeme transversal d'ouverture/fermeture a haute compression
EP99305364A EP0985605B1 (fr) 1998-07-13 1999-07-06 Système de fermeture à glissière disposé transversalement
DE69933826T DE69933826T2 (de) 1998-07-13 1999-07-06 Querangeordnetes Reißverschlusssystem
ES99305364T ES2276507T3 (es) 1998-07-13 1999-07-06 Sistema de cierre deslizante transversal.
AT99305364T ATE344192T1 (de) 1998-07-13 1999-07-06 Querangeordnetes reissverschlusssystem
AU39140/99A AU717915B2 (en) 1998-07-13 1999-07-08 High compression transverse zipper system
BR9903315-1A BR9903315A (pt) 1998-07-13 1999-07-10 Sistema de zìper transversal de alta compressão e métodos para usá-los e para fazê-lo.
AU20618/00A AU727033B2 (en) 1998-07-13 2000-03-02 High compression zipper

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/114,618 US6088998A (en) 1998-07-13 1998-07-13 High compression transverse zipper system

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/261,852 Continuation-In-Part US6167597B1 (en) 1998-07-13 1999-03-03 High compression zipper

Publications (1)

Publication Number Publication Date
US6088998A true US6088998A (en) 2000-07-18

Family

ID=22356374

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/114,618 Expired - Fee Related US6088998A (en) 1998-07-13 1998-07-13 High compression transverse zipper system

Country Status (9)

Country Link
US (1) US6088998A (fr)
EP (1) EP0985605B1 (fr)
AT (1) ATE344192T1 (fr)
AU (2) AU717915B2 (fr)
BR (1) BR9903315A (fr)
CA (1) CA2275075A1 (fr)
DE (1) DE69933826T2 (fr)
ES (1) ES2276507T3 (fr)
NZ (1) NZ336156A (fr)

Cited By (34)

* Cited by examiner, † Cited by third party
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US6279298B1 (en) * 1999-08-12 2001-08-28 Pactiv Corporation Fill-through-the-top package and method and apparatus for making the same
US6550965B2 (en) * 1999-08-27 2003-04-22 Aeroquip Corporation Reclosable plastic bag and method for forming
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US6675552B2 (en) * 1999-12-03 2004-01-13 Sig Pack Systems Ag Method and device for producing bags with three sealed edges and welded-in closing seal
US6860844B1 (en) * 2000-10-04 2005-03-01 Illinois Tool Works Inc. Method of manufacturing carrier web zipper for gusset bags
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CN1890159B (zh) * 2003-12-03 2010-09-15 S2F弗莱克西科公司 香袋闭合组件,由此所得到的香袋及其制造方法和设备
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US20060207221A1 (en) * 2005-03-15 2006-09-21 Illinois Tool Works Inc. Vertical form and fill seal method and apparatus using two sheets of web
US20080000570A1 (en) * 2006-06-28 2008-01-03 Henkel Consumer Adhesives, Inc. Portal insulation kit
US11124323B2 (en) 2007-08-08 2021-09-21 Primapak, Llc Flexible, stackable container and method and system for manufacturing the same
US10232969B2 (en) * 2007-08-08 2019-03-19 Primapak, Llc. Flexible, stackable container and method and system for manufacturing the same
US10023337B2 (en) 2007-08-08 2018-07-17 Primapak, Llc Flexible, stackable container and method and system for manufacturing the same
US9162786B2 (en) * 2007-08-08 2015-10-20 Clear Lam Packaging, Inc. Flexible, stackable container and method and system for manufacturing the same
US20140196406A1 (en) * 2007-08-08 2014-07-17 Clear Lam Packaging, Inc. Flexible, Stackable Container and Method and System for Manufacturing the Same
US20140109522A1 (en) * 2007-08-08 2014-04-24 Clear Lam Packaging, Inc. Flexible, stackable container and method and system for manufacturing the same
US8128545B2 (en) 2009-05-07 2012-03-06 Cmd Corporation Machine for securing a closure system onto a discrete pouch
US20100285942A1 (en) * 2009-05-07 2010-11-11 Cmd Corporation Machine for securing a closure system onto a discrete pouch
US8439812B2 (en) 2009-05-07 2013-05-14 Cmd Corporation Machine for securing a closure system onto a discrete pouch
US20100284633A1 (en) * 2009-05-07 2010-11-11 Cmd Corporation Discrete pouch having a closure system secured thereto
US8257235B2 (en) 2009-05-07 2012-09-04 Cmd Corporation In-line method for securing a closure system onto a discrete pouch
US8128546B2 (en) 2009-05-07 2012-03-06 Cmd Corporation In-line method for securing a closure system onto a discrete pouch
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US20100285943A1 (en) * 2009-05-07 2010-11-11 Cmd Corporation In-line method for securing a closure system onto a discrete pouch
US20130330027A1 (en) * 2011-02-24 2013-12-12 Suzanne Emma Axe Infusion packet and its manufacture
US20150298834A1 (en) * 2012-01-06 2015-10-22 Frito-Lay North America, Inc. Form-fill-seal machine including a filling tube with at least a partially elliptical cross-section
US9102426B2 (en) * 2012-01-06 2015-08-11 Frito-Lay North America, Inc. Form-fill-seal machine including a filling tube with an elliptical cross-section
US9975653B2 (en) * 2012-01-06 2018-05-22 Frito-Lay North America, Inc. Form-fill-seal machine including a filling tube with at least a partially elliptical cross-section
US20130174523A1 (en) * 2012-01-06 2013-07-11 Frito-Lay North America, Inc. Elongated filling tube
US10689161B1 (en) * 2012-06-19 2020-06-23 Wl Reclosables Llc Fastener with guide posts and methods therefor
US10207850B2 (en) 2012-10-26 2019-02-19 Primapak, Llc. Flexible package and method of making same
US11447299B2 (en) 2012-10-26 2022-09-20 Primapak, Llc Flexible material for flexible package
US10399746B2 (en) 2012-10-26 2019-09-03 Primapak, Llc Flexible material for flexible package
US10532855B2 (en) 2012-10-26 2020-01-14 Primapak, Llc Flexible material for flexible package
US9850036B2 (en) 2012-10-26 2017-12-26 Clear Lam Packaging, Inc. Flexible package and method of making the same
US11267632B2 (en) 2012-10-26 2022-03-08 Primapak, Llc Flexible package and method of making the same
US20170113821A1 (en) * 2014-03-27 2017-04-27 Velteko S.R.O. Method for the production of the film tube bag and the vertical form fill seal packaging machine to implement the method
US10994882B2 (en) 2014-05-19 2021-05-04 Primapak, Llc Apparatus and method for making a flexible package
US10843837B2 (en) 2015-09-18 2020-11-24 Primapak, Llc Apparatus and method for making a flexible package
CN112566847A (zh) * 2018-05-29 2021-03-26 伊利诺斯工具制品有限公司 将网和再封闭件给送到成型填充密封机的方法
WO2019231894A1 (fr) * 2018-05-29 2019-12-05 Illinois Tool Works Inc. Procédé d'alimentation en bande et en fermetures refermables d'une formeuse-remplisseuse-scelleuse
US11459139B2 (en) * 2018-05-29 2022-10-04 Illinois Tool Works Inc. Method of feeding web and reclosures to a form fill seal machine
CN112566847B (zh) * 2018-05-29 2022-10-18 伊利诺斯工具制品有限公司 将幅材和再封闭件给送到成型填充密封机的方法
US11572219B2 (en) 2019-02-08 2023-02-07 Elplast Europe Sp. Z O.O. Zipper closure and package using the same

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EP0985605B1 (fr) 2006-11-02
AU717915B2 (en) 2000-04-06
NZ336156A (en) 2000-09-29
EP0985605A2 (fr) 2000-03-15
DE69933826T2 (de) 2007-10-18
AU727033B2 (en) 2000-11-30
AU3914099A (en) 2000-02-03
BR9903315A (pt) 2000-05-02
CA2275075A1 (fr) 2000-01-13
AU2061800A (en) 2000-09-28
ATE344192T1 (de) 2006-11-15
ES2276507T3 (es) 2007-06-16
DE69933826D1 (de) 2006-12-14
EP0985605A3 (fr) 2001-02-28

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